让阿帕奇-apache自动启动的办法
由于要用到php5的一个新功能，不得不从source编译php5,从而打开了一个连锁反应，导致我的apache,mysql 全都要编译一遍，外加一个libxml的库，累得不轻。可是好戏还在后头，重新从source编译过来的apache启动时不自己起来，要去/usr/local/apache/bin里面手动起来，这可累坏了有省电习惯每天关机的我了。郁闷之极，决定搞个自动启动的脚本。会者不难，发现init.d下面有个skeleton,框架打好了，可以直接修改。改完后又修改了一下retry的超时，测试效果不错。另外，做好的脚本还要挂到run level 2 3 4 5里面去，0 1 6是关机，冲启，单用户，需要设置为off.
下面推荐两个命令实现runlevel的挂接：
update-rc.d
sysv-rc-conf,如果没有装，就apt-get install 就OK啦
updaterc.d比较低层次，推荐sysv-rc-conf,它提供了命令行界面和类似top的基于文本的gui界面，界面还是比较友好的。就是没有发现可以控制运行顺序的选项。
下面是我的apache启动脚本：
1#! /bin/sh
2### BEGIN INIT INFO
3# Provides: skeleton
4# Required-Start: $local_fs $remote_fs
5# Required-Stop: $local_fs $remote_fs
6# Default-Start: 2 3 4 5
7# Default-Stop: 0 1 6
8# Short-Description: Example initscript
9# Description: This file should be used to construct scripts to be
10# placed in /etc/init.d.
11### END INIT INFO
12
13# Author: Foo Bar
14#
15# Please remove the "Author" lines above and replace them
16# with your own name if you copy and modify this script.
17
18# Do NOT "set -e"
19
20# PATH should only include /usr/* if it runs after the mountnfs.sh script
21#PATH=/sbin:/usr/sbin:/bin:/usr/bin
22DESC="Apache http service"
23NAME=httpd
24DAEMON=/usr/local/apache/bin/$NAME
25DAEMON_ARGS=""
26PIDFILE=/var/run/$NAME.pid
27SCRIPTNAME=/etc/init.d/$NAME
28
29# Exit if the package is not installed
30[ -x "$DAEMON" ] || exit 0
31
32# Read configuration variable file if it is present
33#[ -r /usr/local/apache/conf/httpd.conf ] && . /usr/local/apache/conf/httpd.conf
34
35# Load the VERBOSE setting and other rcS variables
36. /lib/init/vars.sh
37
38# Define LSB log_* functions.
39# Depend on lsb-base (>= 3.0-6) to ensure that this file is present.
40. /lib/lsb/init-functions
41
42#
43# Function that starts the daemon/service
44#
45do_start()
46{
47 # Return
48 # 0 if daemon has been started
49 # 1 if daemon was already running
50 # 2 if daemon could not be started
51 start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON --test > /dev/null \
52 || return 1
53 start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON -- \
54 $DAEMON_ARGS \
55 || return 2
56 # Add code here, if necessary, that waits for the process to be ready
57 # to handle requests from services started subsequently which depend
58 # on this one.As a last resort, sleep for some time.
59}
60
61#
62# Function that stops the daemon/service
63#
64do_stop()
65{
66 # Return
67 # 0 if daemon has been stopped
68 # 1 if daemon was already stopped
69 # 2 if daemon could not be stopped
70 # other if a failure occurred
71 start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE --name $NAME
72 RETVAL="$?"
73 [ "$RETVAL" = 2 ] && return 2
74 # Wait for children to finish too if this is a daemon that forks
75 # and if the daemon is only ever run from this initscript.
76 # If the above conditions are not satisfied then add some other code
77 # that waits for the process to drop all resources that could be
78 # needed by services started subsequently.A last resort is to
79 # sleep for some time.
80 start-stop-daemon --stop --quiet --oknodo --retry=0/2/KILL/5 --exec $DAEMON
81 [ "$?" = 2 ] && return 2
82 # Many daemons don't delete their pidfiles when they exit.
83 rm -f $PIDFILE
84 return "$RETVAL"
85}
86
87#
88# Function that sends a SIGHUP to the daemon/service
89#
90do_reload() {
91 #
92 # If the daemon can reload its configuration without
93 # restarting (for example, when it is sent a SIGHUP),
94 # then implement that here.
95 #
96 start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --name $NAME
97 return 0
98}
99
100case "$1" in
101start)
102 [ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
103 do_start
104 case "$?" in
105 0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
106 2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
107 esac
108 ;;
109stop)
110 [ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
111 do_stop
112 case "$?" in
113 0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
114 2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
115 esac
116 ;;
117#reload|force-reload)
118 #
119 # If do_reload() is not implemented then leave this commented out
120 # and leave 'force-reload' as an alias for 'restart'.
121 #
122 #log_daemon_msg "Reloading $DESC" "$NAME"
123 #do_reload
124 #log_end_msg $?
125 #;;
126restart|force-reload)
127 #
128 # If the "reload" option is implemented then remove the
129 # 'force-reload' alias
130 #
131 log_daemon_msg "Restarting $DESC" "$NAME"
132 do_stop
133 case "$?" in
134 0|1)
135 do_start
136 case "$?" in
137 0) log_end_msg 0 ;;
138 1) log_end_msg 1 ;; # Old process is still running
139 *) log_end_msg 1 ;; # Failed to start
140 esac
141 ;;
142 *)
143 # Failed to stop
144 log_end_msg 1
145 ;;
146 esac
147 ;;
148*)
149 #echo "Usage: $SCRIPTNAME {start|stop|restart|reload|force-reload}" >&2
150 echo "Usage: $SCRIPTNAME {start|stop|restart|force-reload}" >&2
151 exit 3
152 ;;
153esac
154
155:
156
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